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Edition:Final Report
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Abstract:The evolution of composite material boat construction has created the need to evaluate the basic design tools that are used to create safe marine structures. During the 1960s, fiberglass boat building proliferated and with it came the rapid increase in boat ownership. Early fiber reinforced plastic (FRP) boat builders relied on "build and test" or empirical methods to guarantee that their hulls were strong enough for the intended service. Presently in this country, motor-yachts have been built up to 160 feet (49 meters) and minehunters up to 188 feet (57 meters). However, as materials and building practices improve, it is not unreasonable to consider composite construction for vessels up to 100 meters (approximately 330 feet) in length. Although, classification societies generally review FRP construction for vessels up to 200 feet in length, current domestic regulations limit commercial composite ships to 100 gross tons or 149 passengers, with the exception of larger fast ferries as allowed by the International Maritime Organization (IMO) High-Speed Craft Code. The goal of this Design Guide is to familiarize the user with the methodology and information required to design safe marine composite structures. Emphasis is placed on concepts, methodology, and design equations. Reference sources that provide mathematical derivations for specific geometry and load cases are cited throughout the report. The Guide encourages the understanding of how a composite structure responds to loads in the marine environment.
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